Question

The cost of flooring a rectangular hall at 64/m2 is 2,048. If the breadth of the hall is 5m, Find its perimeter​

Answer 1

Answer: I don't have rupee sign so I ll use dollar $ instead of ruppee

total cost of flooring = 2048$

cost of flooring per m²= 64$

the area of the rectangle= 2048$/64$/m²

= 32/1/m² (cut both the dollars/rupee)

= 32m²

now area of rectangular floor= l*b

=> 32m²= l*5m

l= 32m²/5m= 6.4 m

perimeter of the rectangle = 2(l+b)

= 2(6.4+5) m

= 2(11.4) m

=22.8m

hope this help